<template>
  <div class="login-container">
    <div class="school_badge">
      <div class="bg"></div>
      <div class="badge">
        <img src="https://www.bsnc.cn/images/20190826101731046x0i.png" alt="" />
        <img src="https://www.bsnc.cn/images/xiaoxun.png" alt="" />
      </div>
    </div>
    <div class="school_bg">
      <img src="https://www.bsnc.cn/images/page.jpg" alt="" />
    </div>
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">清廉保院</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>
      <div class="tip">
        <!-- 记住我 -->
        <el-checkbox v-model="checked" class="rememberMe">记住我</el-checkbox>
      </div>
      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin"
        >登录</el-button
      >
    </el-form>
    <div class="tips">
      <span>技术支持：@大数据学院软件开发中心</span>
    </div>
  </div>
</template>

<script>
import { validUsername } from "@/utils/validate";
const Base64 = require("js-base64").Base64;

export default {
  name: "Login",
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error("Please enter the correct user name"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error("密码不少于6位"));
      } else {
        callback();
      }
    };
    return {
      checked: false,
      loginForm: {
        username: "",
        password: "",
      },
      loginRules: {
        username: [
          { required: true, message: "请输入您的用户名", trigger: "blur" },
        ],
        password: [
          // { required: true, trigger: "blur", validator: validatePassword },
          { required: true, message: "请输入您的密码", trigger: "blur" },
        ],
      },
      loading: false,
      passwordType: "password",
      redirect: undefined,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },

  mounted() {
    this.getCookie();
  },

  methods: {
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("user/login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/" });
              this.loading = false;
            })
            .catch(() => {
              this.loading = false;
            });

          //记住密码
          if (this.checked) {
            let password = Base64.encode(this.loginForm.password); // base64加密
            this.setCookie(this.loginForm.username, password, 7);
          } else {
            this.setCookie("", "", -1); // 修改2值都为空，天数为负1天就好了
          }
        } else {
          return false;
        }
      });
    },

    //记住密码
    // 设置cookie
    setCookie(username, password, days) {
      let date = new Date(); // 获取时间
      date.setTime(date.getTime() + 24 * 60 * 60 * 1000 * days); // 保存的天数
      window.document.cookie =
        "username" + "=" + username + ";path=/;expires=" + date.toGMTString();
      window.document.cookie =
        "password" + "=" + password + ";path=/;expires=" + date.toGMTString();
    },

    // 读取cookie 将用户名和密码回显到input框中
    getCookie() {
      if (document.cookie.length > 0) {
        let arr = document.cookie.split("; "); //分割成一个个独立的“key=value”的形式
        for (let i = 0; i < arr.length; i++) {
          let arr2 = arr[i].split("="); // 再次切割，arr2[0]为key值，arr2[1]为对应的value
          if (arr2[0] === "username") {
            this.loginForm.username = arr2[1];
          } else if (arr2[0] === "password") {
            this.loginForm.password = Base64.decode(arr2[1]); // base64解密
            this.checked = true;
          }
        }
      }
    },
  },
};
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: #fff;
  overflow: hidden;

  .school_badge {
    width: 100vw;
    // height: px;
    position: fixed;

    .bg {
      height: 41px;
      width: 100vw;
      background-color: #15499a;
    }

    .badge {
      height: 100px;
      width: 100vw;
      background: #fff;
      padding: 25px 25px 20px;
      display: flex;
      justify-content: space-between;
      flex-direction: row;
      align-items: center;

      img {
        display: block;
        height: 50px;
      }
    }
  }

  .school_bg {
    position: fixed;
    bottom: 0;

    img {
      display: block;
      width: 100vw;
    }
  }

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 20% 35px 0;
    margin: 0 auto;
    overflow: hidden;

    .tip {
      // background: #15499a;
      margin-bottom: 10px;
    }
  }

  .tips {
    font-size: 14px;
    color: #606060;
    margin-bottom: 10px;
    text-align: center;
    position: fixed;
    width: 100vw;
    bottom: 6%;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: #474747;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
      font-family: "STXinwei";
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}

::v-deep .el-input__inner {
  color: #000 !important;
}
</style>
